Horton

Re: [HACKERS] Re: [SQL] MAX() of 0 records.

Philip Warner <pjw@rhyme.com.au>

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From: Philip Warner <pjw@rhyme.com.au>
To: Tom Lane <tgl@sss.pgh.pa.us>, Paul McGarry <paulm@opentec.com.au>, pgsql-bugs@postgresql.org, pgsql-hackers@postgresql.org
Date: 2000-07-10T00:24:30Z
Lists: pgsql-bugs, pgsql-hackers 
At 14:35 9/07/00 -0400, Tom Lane wrote:
>
>so the construct is definitely not SQL-compliant.  Maybe we should just
>forbid it.  However, if you are joining against another table (which
>itself is not an SQL feature) then it seems like there is some potential
>use in it.  What do people think of my implicit-GROUP-BY-ctid idea?
>That would basically say that the aggregate is computed over all the
>tuples that join to a single target tuple.

Sounds perfect to me...


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